RESUMO
The aim of this study was to evaluate the effectiveness of 17% ethylene-diamine-tetra-acetic acid (EDTA) used alone or associated with 2% chlorhexidine gel (CHX) on intracanal medications (ICM) removal. Sixty single-rooted human teeth with fully formed apex were selected. The cervical and middle thirds of each canal were prepared with Gates Glidden drills and rotary files. The apical third was shaped with hand files. The specimens were randomly divided into two groups depending on the ICM used after instrumentation: calcium hydroxide Ca(OH)(2) +CHX or Ca(OH)(2) +sterile saline (SS). After seven days, each group was divided into subgroups according to the protocol used for ICM removal: instrumentation and irrigation either with EDTA, CHX+EDTA, or SS (control groups). All specimens were sectioned and processed for observation of the apical thirds by using scanning electron microscopy. Two calibrated evaluators attributed scores to each specimen. The differences between the protocols for ICM removal were analyzed with Kruskal-Wallis and Mann-Whitney U tests. Friedman and Wilcoxon signed rank tests were used for comparison between the score of debris obtained in each root canal third. Remains of Ca(OH)(2) were found in all specimens independently of the protocol and ICM used (P > 0.05). Seventeen percent EDTA showed the best results in removing ICM when used alone (P < 0.05), particularly in those associated with CHX. It was concluded that the chelating agent 17% EDTA significantly improved the removal of ICM when used alone. Furthermore, the type of the vehicle associated with Ca(OH)(2) also plays a role in the ICM removal.
Assuntos
Quelantes/análise , Clorexidina/análise , Cavidade Pulpar/ultraestrutura , Ácido Edético/análise , Irrigantes do Canal Radicular/análise , Humanos , Microscopia Eletrônica de VarreduraRESUMO
O objetivo desse trabalho foi relatar dois casos clínicos sobre barodontalgia, que é um evento que envolve o aumento ou a diminuição da pressão atmosférica na prática de mergulho ou em viagens aéreas, causando sintomatologia. Os casos clínicos reportam barodontalgia na presença de vitalidade e de necrose pulpar. Tratamento endodõntico foi realizado no elemento envolvido, seguido da restauração coronária. Concluiu-se que o Cirurgião-Dentista deve ter conhecimento sobre a barodontalgia para considerá-Ia no diagnóstico diferencial da dor dentária comum.
The aim of this study was to report two cases of barodontalgia, which is an event that involves an increase or decrease of the atmospheric pressure in diving or air travei, causing symptomatology. The clinical cases reported barodontalgia in the presence of vital and necrotic pulp tissues. Endodontic treatment was performed in the tooth involved, followed by coronal restoration. It was concluded that the dentist must have the knowledge about barodontalgia in order to consider it in the differential diagnosis of common dental pain.